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Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle

Against the background of China’s advocating ecological civilisation construction, an urgent task and a major challenge are to identify key places for ecological protection and restoration and then propose optimisation strategies for future land use, especially in the Pearl River Delta (PRD), one of...

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Autores principales: Chen, Jinzhao, Mei, Zhixiong, Wang, Bin, Wei, Junchao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9140524/
https://www.ncbi.nlm.nih.gov/pubmed/35627835
http://dx.doi.org/10.3390/ijerph19106298
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author Chen, Jinzhao
Mei, Zhixiong
Wang, Bin
Wei, Junchao
author_facet Chen, Jinzhao
Mei, Zhixiong
Wang, Bin
Wei, Junchao
author_sort Chen, Jinzhao
collection PubMed
description Against the background of China’s advocating ecological civilisation construction, an urgent task and a major challenge are to identify key places for ecological protection and restoration and then propose optimisation strategies for future land use, especially in the Pearl River Delta (PRD), one of the regions in China that has the highest urbanisation level. In this study, we find the key places by constructing ecological security patterns and proposing optimisation strategies for future land use by analysing land-use status. We also propose a source identification method based on the resistance distance principle. Results show that forty-six sources were mainly distributed in the mountainous areas surrounding PRD but were less distributed along both sides of the Pearl River estuary. The difference in the spatial distribution of sources is remarkable. Eighty-four corridors generally had spider-like shapes. In the central plain of PRD, corridors were relatively long and narrow. Ninety pinch points were concentrated on existing rivers. Three barriers were located in the corridors between adjacent sources. Two artificial corridors were proposed to be established, which can improve the ecological network connectivity. The method for extracting sources based on the resistance distance principle is proven to be advantageous for improving the integrity of source extraction results and making ecological security patterns more reasonable.
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spelling pubmed-91405242022-05-28 Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle Chen, Jinzhao Mei, Zhixiong Wang, Bin Wei, Junchao Int J Environ Res Public Health Article Against the background of China’s advocating ecological civilisation construction, an urgent task and a major challenge are to identify key places for ecological protection and restoration and then propose optimisation strategies for future land use, especially in the Pearl River Delta (PRD), one of the regions in China that has the highest urbanisation level. In this study, we find the key places by constructing ecological security patterns and proposing optimisation strategies for future land use by analysing land-use status. We also propose a source identification method based on the resistance distance principle. Results show that forty-six sources were mainly distributed in the mountainous areas surrounding PRD but were less distributed along both sides of the Pearl River estuary. The difference in the spatial distribution of sources is remarkable. Eighty-four corridors generally had spider-like shapes. In the central plain of PRD, corridors were relatively long and narrow. Ninety pinch points were concentrated on existing rivers. Three barriers were located in the corridors between adjacent sources. Two artificial corridors were proposed to be established, which can improve the ecological network connectivity. The method for extracting sources based on the resistance distance principle is proven to be advantageous for improving the integrity of source extraction results and making ecological security patterns more reasonable. MDPI 2022-05-22 /pmc/articles/PMC9140524/ /pubmed/35627835 http://dx.doi.org/10.3390/ijerph19106298 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Jinzhao
Mei, Zhixiong
Wang, Bin
Wei, Junchao
Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title_full Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title_fullStr Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title_full_unstemmed Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title_short Construction of Ecological Security Patterns Based on Circuit Theory under the Resistance Distance Principle
title_sort construction of ecological security patterns based on circuit theory under the resistance distance principle
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9140524/
https://www.ncbi.nlm.nih.gov/pubmed/35627835
http://dx.doi.org/10.3390/ijerph19106298
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